Hi:
I still have a 650, but isn't there a BIG difference in the available memory? I believe the 755 has 128mb (user accessible 62) vs 32mb (23 user accessible) in the 650.
I also think the 755 can make use of the higher speed networks that the 650 isn't capable of. I do believe they use the same processor though.
Yeah, I guess there isn't much difference.
You really should do a Google search to research all of the differences. I am guessing there will be a few more. Salespeople are usually the absolute worst at knowing details (that does NOT mean all salespeople). They might have to spend time reading all those pesky brochures and spec sheets and then actually use the devices!!! Way too time consuming.
SteveTaz